BMC/Intel-BMC/linux.git/fs/f2fs/f2fs_crypto.h, branch dev

f2fs crypto: remove alloc_page for bounce_page

2015-06-01T23:21:10+00:00

We don't need to call alloc_page() prior to mempool_alloc(), since the mempool_alloc() calls alloc_page() internally. And, if __GFP_WAIT is set, it never fails on page allocation, so let's give GFP_NOWAIT and handle ENOMEM by writepage(). Signed-off-by: Jaegeuk Kim

f2fs crypto: use per-inode tfm structure

2015-06-01T23:21:04+00:00

This patch applies the following ext4 patch: ext4 crypto: use per-inode tfm structure As suggested by Herbert Xu, we shouldn't allocate a new tfm each time we read or write a page. Instead we can use a single tfm hanging off the inode's crypt_info structure for all of our encryption needs for that inode, since the tfm can be used by multiple crypto requests in parallel. Also use cmpxchg() to avoid races that could result in crypt_info structure getting doubly allocated or doubly freed. Signed-off-by: Theodore Ts'o Signed-off-by: Jaegeuk Kim

f2fs crypto: shrink size of the f2fs_crypto_ctx structure

2015-06-01T23:20:57+00:00

This patch integrates the below patch into f2fs. "ext4 crypto: shrink size of the ext4_crypto_ctx structure Some fields are only used when the crypto_ctx is being used on the read path, some are only used on the write path, and some are only used when the structure is on free list. Optimize memory use by using a union." Signed-off-by: Theodore Ts'o Signed-off-by: Jaegeuk Kim

f2fs crypto: get rid of ci_mode from struct f2fs_crypt_info

2015-06-01T23:20:56+00:00

This patch integrates the below patch into f2fs. "ext4 crypto: get rid of ci_mode from struct ext4_crypt_info The ci_mode field was superfluous, and getting rid of it gets rid of an unused hole in the structure." Signed-off-by: Theodore Ts'o Signed-off-by: Jaegeuk Kim

f2fs crypto: add encryption key management facilities

2015-05-28T22:41:49+00:00

This patch copies from encrypt_key.c in ext4, and modifies for f2fs. Use GFP_NOFS, since _f2fs_get_encryption_info is called under f2fs_lock_op. Signed-off-by: Michael Halcrow Signed-off-by: Ildar Muslukhov Signed-off-by: Theodore Ts'o Signed-off-by: Jaegeuk Kim

f2fs crypto: declare some definitions for f2fs encryption feature

2015-05-28T22:41:45+00:00

This definitions will be used by inode and superblock for encyption. Signed-off-by: Jaegeuk Kim